.sign-in-query-dept-box {
    position: relative;
    left: 50%;
    transform: translate(-50%, 0);
    margin-top: 70px;
    width: 50%;
    text-align: left;
    min-width: 400px;
    padding-bottom: 100px;
}

.sign-in-query-sid .ivu-input {
    color: black;
}

.sign-in-query-sid {
    width: 300px; 
    margin-bottom: 10px
}

.sign-in-query-select {
    width: 100px;
    margin-bottom: 10px
}

.sign-in-query-search {
    float: right;
}